From mrodriguez@earthlink.net Wed May 03 13:19:28 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!earthlink!mrodriguez From: mrodriguez@earthlink.net (Mei Rodríguez) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May03.131928.7423@earthlink.net> Date: Wed, 03 May 1995 13:19:28 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. A 1024-point radix-2 FFT drops from 142 milliseconds under SANE to just 18 milliseconds using direct FPU instructions. Make sure you install the 32-bit Enabler on older IIci machines running System 7.1! -- Mei Rodríguez "A soul is not exclusive to biology." 486DX2/66 (Linux 1.2.13) / SunOS 4.1.4 From snilsson@uni-hamburg.de Fri May 05 14:50:28 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!snilsson From: snilsson@uni-hamburg.de (Steve Nilsson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May05.145028.8263@uni-hamburg.de> Date: Fri, 05 May 1995 14:50:28 GMT References: <1995May03.131928.7423@earthlink.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995May03.131928.7423@earthlink.net>, mrodriguez@earthlink.net (Mei Rodríguez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- === Steve Nilsson === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "Marcus is not one man." From lfournier@panix.com Sat May 06 04:35:28 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!panix!lfournier From: lfournier@panix.com (Lucia Fournier) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Benchmarking FFT routines on Mac IIci with MC68882 FPU under System 7.5 Message-ID: <1995May06.043528.1368@panix.com> Date: Sat, 06 May 1995 04:35:28 GMT References: <1995May03.131928.7423@earthlink.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May03.131928.7423@earthlink.net>, mrodriguez@earthlink.net (Mei Rodríguez) writes: > Compiling stardust.c with Think C 6.0 vs MPW C with direct 68882 inlining. > By passing the -mc68882 compiler flag in Think C, all sin/cos and sqrt operations compile directly to FPU opcodes. Mac users bragging about 6-minute render times while Unix workstations do it in 20 seconds. Classic Apple distortion field. -- Lucia Fournier *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0